package com.util;


import java.security.MessageDigest;





public class SecurityUtils {
	
	public static String string2MD5(String inStr){  
        MessageDigest md5 = null;  
        try{  
            md5 = MessageDigest.getInstance("MD5");  
        }catch (Exception e){  
            System.out.println(e.toString());  
            e.printStackTrace();  
            return "";  
        }  
        char[] charArray = inStr.toCharArray();  
        byte[] byteArray = new byte[charArray.length];  
  
        for (int i = 0; i < charArray.length; i++)  
            byteArray[i] = (byte) charArray[i];  
        byte[] md5Bytes = md5.digest(byteArray);  
        StringBuffer hexValue = new StringBuffer();  
        for (int i = 0; i < md5Bytes.length; i++){  
            int val = ((int) md5Bytes[i]) & 0xff;  
            if (val < 16) { 
                hexValue.append("0"); 
            }
            hexValue.append(Integer.toHexString(val));  
        }  
        return hexValue.toString();  
  
    }  
  
    /** 
     * 鍔犲瘑瑙ｅ瘑绠楁硶 鎵ц涓�鍔犲瘑锛屼袱娆¤В瀵�
     */   
    public static String convertMD5(String inStr){  
    	byte[] a = inStr.getBytes();
//        char[] a = inStr.toCharArray();  
        for (int i = 0; i < a.length; i++){  
            a[i] = (byte) (a[i] ^ 't');  
        }  
        String s = new String(a);  
        return s;  
  
    }  
}
